Asaccus arnoldi is a species of lizard in the family Phyllodactylidae.

It, along with all other species in the genus Asaccus, is endemic to the Hajar Mountains of northern Oman.

[3] The specific name, arnoldi, is in honor of British herpetologist Edwin Nicholas "Nick" Arnold.

The maximum recorded snout-to-vent length (SVL) of A. arnoldi is only 33.6 mm (1.32 in).

[1] It is most closely related to Asaccus gallagheri.